Lockdowns imposed by governments of the EU member states produced significant consequences in the form of losses to companies which is why the member states decided to assist businesses from public funds. This paper aims to identify and initially assess the implementation of schemes under which COVID-19 related state aid was granted in Poland in 2020,focusing on different instruments and beneficiary sizes. The idea was to find out how well public intervention schemes responded to the needs of the weakest companies hit most by COVID-19 inflicted crisis. To this end, statistical analysis was deployed to learn about the share of individual groups of businesses of different sizes in support instruments granted in relation with COVID-19 in 2020 by type of aid. The study helped to demonstrate that Polish aid schemes approved by the European Commission in 2020 assisted mainly micro and small companies which usually suffered from poor liquidity. They benefited, above all, from soft instruments, such as unreturnable loans, advance payments or grants and much less frequently from credit guarantees.